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(No Model.)

* A. E. BELL.

r Grinding Mill. v o. 239,701. Patented April 5,1881.

INYENTOR away WITNESSES i ATTORNEYS;

I v J mdV 7 BY Ja M E N P S FEOTD LIT" RRPH WASHINGTON D c NrrsD STATES ATENT Fries.

AZEL H. BELL, OF BELLE PLAINE, IOWA, ASSIGNOR OF ONE-HALF TO FARIBAULT WIND MILL COMPANY.

GRINDING-MILL.

SPECIFICATION forming part of Letters Patent No. 239,701, dated April 5, 1881.

Application filed October 27, 1880.

To all whom it may concern:

Be itknown that I, AZEL H. BELL, of Belle Plaine, in the county of Benton and State of Iowa, have invented a new and Improved Grinding-Mill, of which the following is a specification.

The object of this invention is to provide a mill especially designed for grinding feed, and

operati'n g witha reciprocating motion, and adapted to be attached to the pump-rod of a windmill.

Figure 1 is a partly-sectional front elevation of the mill, with parts broken away to exhibit other parts. Fig. 2 is 'a-plan of the mill. Fig. 3 is a cross-section on line or as, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the central grinding-plate, provided with suitable teeth or corrugations, a, on each side, and having a lever, A, attached to its lower edge, whereby said plate A is connected with the pump-rod of a windmill (not shown) by suitable mechanism, and having, further, a segment or seetion'removed from its upperedge, as shown at b, for the admission of grain or other material to be ground. I

B represents a horizontal shatt or bolt, on which is keyed or otherwise secured a flanged sleeve or hub, G, to which latter the plate A is rigidly secured by the bolts B or other convenient device.

On either side of the open plate A, with their toothed or corrugated faces in contact therewith, are the continuous outer grinding-rings, D D, which are held in place by being bolted to the ratchet-plates E E, respectively, as shown at c a, the hubs of said ratchet-plates E E being set about either end of the sleeve or hub O. i F is the case of the mill, held together by the bolts d (1, having its periphery or edge closed at the top, as shown atfin Fig. 2, and open at the bottom.

Pivoted within the upper part of the case F on pins g, and hanging perpendicularly down with ends engaged in the peripheral teeth of the ratchet-plates E E, are pawls G, which are held in contact with the teeth of said ratchet-plates E E by springs G G, that are secured in sockets H. These pawls G (No model.)

permit the ratchet-plates E and their attached grinding-ringsD D to turn in the direction of the arrow, Fig. 1, but prevent their rotation in the opposite direction.

The grinding-rings D D are pressed against the central plate, A, or permitted to withdraw therefrom by turning up the nuts h h or the end of the shaft or bolt B against the washers m m, that pressupon the ends of the hubs ot' the ratchet-plates E E, or by slackening said nuts h h, and thereby the mill is made to grind fine or coarse, as may be desired. M M are lugs, by means of which the mill is fixed upon suitable foundations for running.

The mill bein put in motion, reciprocating or oscillating from right to left, and vice versa, the grain is fed through the hopper N into the opening I) of the central plate, A, on either side, between the plate A and rings D D, and as the said plate A oscillates in the direction of the arrow, Fig. l, the said grinding-plate A and rings D D move together in one direction, because of the friction caused between said plate and rings by the introduced grain. Hence no grinding is accomplished, and consequently no power absorbed therefor; but on the IG'ELIIILSUOEG the plate A is moved, while the rings D D are prevented from moving by the engagement of the pawls G G in the teeth of the ratchet-plates E E. Consequently the introduced grain is in some measure ground, and so on each stroke the rings D D are moved by and with the plate A, and heldstationary on the return-stroke by the pawls G G, whereby the grinding is effected. The plate A, it will be seen, makes a constant reciprocating motion, and the rings D D an intermittent rotary motion. The grain or other material, as it is ground, falls from between the plate A and rings D D at the periphery of the mill.

By disengaging either one of the pawls G the corresponding ratchet-plate and ring will oscillate with the plate A, and therefore no grinding will be done on that side of the plate A--a condition thatmay be desirable in a light wind.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

In a grinding-mill, the combination, with the ease F, carrying spring-pawls G, of the central guiding-plate, A, having lever A, side by the mill is adapted to be operated and used teeth, a, and opening I), the supporting and adjusting bolt 13, carrying the flanged sleeve C, the continuous outer grinding-rings. D D,

and the ratchet-plates E E, fixed to the rings at c c, and having their hubs set about either end of sleeve 0, as shown and described, Whereas set forth.

AZEL H. BELL.

Witnesses:

F. J. HORAK, G. W. STONE. 

